The correct answer is: A. Gadadhar Singh.
Gadadhar Singh was a king of the Ahom dynasty who ruled from 1681 to 1696. He was a devout Hindu and built several temples at Basistha Ashram, including the Basistha Temple, the Kamalabari Temple, and the Sukreswar Temple.
The Basistha Temple is a Hindu temple dedicated to the god Basistha. It is located on the banks of the Brahmaputra River in Guwahati, Assam, India. The temple is one of the most important temples in Assam and is a popular pilgrimage destination.
The Kamalabari Temple is a Hindu temple dedicated to the goddess Kamala. It is located on the banks of the Brahmaputra River in Guwahati, Assam, India. The temple is one of the most important temples in Assam and is a popular pilgrimage destination.
The Sukreswar Temple is a Hindu temple dedicated to the god Shiva. It is located on the banks of the Brahmaputra River in Guwahati, Assam, India. The temple is one of the most important temples in Assam and is a popular pilgrimage destination.
The other options are incorrect because they are not the names of kings who built temples at Basistha Ashram.